Bearing-coil housing



y 23, 1929. F. A. KOLSTER 2 BEARING COIL HOUSING Filed June 25, 1926 .H In

l v ll ATTORNEY.

Patented July 23, 1929.

NHTE

FREDERICK A. KOLSTER, OF PALO ALTO, CALIFORNIA, ASSIGNOR TO FEDERAL TELE- GRAPH COMPANY, OF SAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALI- FORNIA.

BEARING-COIL HOUSING.

Application filed June 25,

My invention relates to directional radio apparatus or radio compasses for finding the bearing or direction and sense of direction of a radio beacon or other transmitter of electro-radiant energ and has particular reference to an enclosing structure or housin for shielding the rotatable bearing coil from the bending or stressing effect of a pressure-applying medium, as wind, rain or the like exerted transversely of the coil and its supporting shaft.

In accordance with my invention, the hearing coil is shielded from the influence of air currents by a housing within which the coil, while rotating, generates a surface substantially concentric with respect to the wall structure of said housing, and more particu larly, the aforesaid housing is formed by securing two hemispherical, conical or similar structures in base-to-base relation.

Further in accordance with my invention, a bearing coil is supported in spaced relation with respect to a surface, as the roof of a ships pilot house, by a shaft utilizable for rotating the aforesaid coil, and independently of said shaft there are provided supporting members upon which is disposed a housing for the rotatable bearing coil, and more particularly, the aforesaid coil and housing structures are sufficiently removed from the roof to permit passage therebeneath of a person of ordinary height.

Further in accordance with my invention, the housing or enclosing structure for the bearing coil is formed of suitable rigid material, as fabric impregnated with a phenol condensation product.

Further, in accordance with my invention, the aforesaid housing is preferably formed by utilizing two substantially similar structures having flanged bases between which is disposed a member or ring, as a discontinuous or slotted metallic ring impeding the passage of induced currents.

My invention resides in apparatus and structure of the character hereinafter described and claimed.

For an illustration of some of the various forms my invention may take, reference is to 1926. Serial No. 118,469.

be had to the accompanying which:

Fig. 1 is an elevational view of apparatus constructed in accordance with my invention.

Fig. 2 is a plan view of a ring to be disposed between the conical or hemispherical housing structures. I

Fig. 3 is an elevational View of a modified form of my invent-ion.

Fig. 4 is a transverse horizontal sectional view of the structure illustrated in Fig. 3.

Referring to Fig. 1, upon the surface R, preferably the roof of a ships pilot house, is disposed the housing member or tube 1, preferably of metal, one end of which terminates in a flange 2 suitably secured to the roof R by bolts 3 or the like. At its other or upper end, as viewed in Fig. 1, member 1 terminates in a skirt or conical portion 4 within which is received the apex of a cone-shaped protecting member or structure P enclosing, in the example shown, the lower half of the rotatable bearing coil G. Member P terminates in a circumferential flange p, between which and the similar flange p of an upper cone-shaped member P is received a ring 5 of suitable material, as a phenol condensation product, metal or otherwise, as desirable. However, when constructed of metallic material, ring 5 is preferably split or circumferentially discontinuous, as indicatcd at 5 Fig. 2, whereby the development therein of induced currents is substantially prevented. Flanges p and p and ring 5 are secured or tied together in any suitable manner, as by bolts 6, some of which may pass into the threaded ends of stanchions or supporting members 7 rising from the roof B. By preference, the length of members 1 and 7 is such that the distance from roof R to the conical end at of member 1 is approximately seven feet, so that a person of ordinary height may readily pass, while erect, beneath the bearing coil and its enclosing structure.

drawing, in

Inasmuch as conical members P and P are particularly utilized to protect coil C from the bending or stressing effect thereon of the elements, and particularly the wind, such members should be constructed of suitable rigid material, as fabric, preferably linen or canvas, impregnated in a phenol condensation product.

Obviously, the dimensions of the conical members P and P should be so selected as to house or enclose a bearing coil of desired si7 e or shape. In the example shown, coil C is substantially square, and the length along each side is approximately two feet, thereby conforming to the similar coil disclosed in my prior application Ser. No. 3431a, filed November 17, 1925. The frame members 8, upon which coil C is wound, are suitably secured to a shaft 9 provided at its upper end, as viewed in Fig. 1, with a conical thrust hearing 10 co-acting with the apex of conical member P, which in this region may be suitably reinforced to resist the wear imposed by bearing 10. Shaft 9 extends downwardly through the housing member 1, within which is mounted the ball bearing structure 1.1, thence through the roof R to the interior of the pilot house, where it may be associated with any desired structure for determining the hearing or direction and sense of direction of a radio beacon or other transmitter of electro-radiant energy received by coil G.

In my aforesaid prior application Ser. h o. 34:,814c, there is illustrated structure which may be thus utilized, and is herein shown as comprising a housing, cabinet or hollow pedestal 12 suitably supported, as by the floor -F of the ships pilot house. On the upper end of housing 12 is carried a suitable ships compass 18 having the compass card 14. Disposed on the housing 12 is the annular member 15, from which rise the arms or supports 16 terminating in the hub 17 forming a bearing for a rotatable vertical shaft, not shown, upon whose lower end is secured the downwardly extending arms 18, by which are carried the horizontally extending sighting wires 19 and 20 disposed one vertically above the other and co-acting with the scale 14'. Secured to or integral with the hub 17 is the plate 21 upon which is mounted ahood or casing member 22, within which is mounted a device, not shown, for correcting for wave front distortion. Rising from casing member 22 is the stationary hub or bearing member 23, in which is disposed-a hollow shaft, not shown, rotatable by the hand wheel 2% secured thereto and to the shaft 9.

WVithin the last named hollow shaft is a helical spring, not shown, secured at its one end to shaft 9 and at its other end to the shaft rotatably mounted in hub 17 and to which the arms 18 carrying the sighting wires 19 and 20 are secured.

Coil C terminates in conductors 25 and 26 extending through the hollow shaft 9 and connected, respectively, with the slip rings 27 and 28 upon which bear, respectively, the brushes 29 and 30, to which are respectively connected the conductors 31 and 32, which are extended within the housing or pedestal 12- and connected in suitable circuit relation with he therein-contained tuning and amplifying apparatus, not shown.

Due to the provision of the protecting structure P, P and the mode of supporting the same independently of the coil C and its rotating shaft 9, the lateral pressure effect of the wind or air currents on said coil is substantially reduced. As a result, the frictional resistance to turning movement of shaft 9, particularly at its bearing 11, is substan tially diminished, and, therefore, the operator may easily and delicately rotate the aforesaid rotatable structure by manipulating wheel 24L.

In Figs. 3 and 4, there is illustrated a modifled form of my invention, wherein the housmember 1 terminates in a concavo-convex portion 4: supporting a hemispherical protecting member or structure P terminating in a circiunferential flange 29 between which and the similar flange 20 of the upper hemispcrical protecting member P is secured a ring 5, which may be of the character described above in connection with Figs. 1 and 2.

Shaft 9, as viewed in Fig. 3, extends upwardly through the protect-ing member P and the dished clamping plate 33 serving to clamp said member P to the portion 4a. The upper end of shaft 9, which is preferably solid, passes through a supporting member 3 and its reduced end is received in a hearing 35 having a concavo-convex portion engaging the inner surface of protecting member P Member 34, in the example shown, extends diametrically of a circular rame 36, of suitable material, as a phenol condensation product, upon which is wound or disposed the proper number of convolutions of the bearing coil C of which the conductors 25 and 26 are its terminals.

What- I claim is:

1. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising a housing within which said coil while rotating generates a sure face substantially concentric with respect to the wall structure of said housing.

2. The combination with a supporting surface, of a bearing coil, coil rotating and supporting structure secured thereto, a housing w spaced from said surface and within which he coil is rotatable, and means for supporting the housing independently of said supporting structure.

3. The combination with the roof of a ships pilot house, of a bearing coil, coil rotating and supporting structure secured thereto, a housing spaced from said roof and within which the 'coil is rotatable, and supporting stanchions rising from said roo for supporting the housin independently of said supporting structure.

l. The combination with the roof of a ships pilot house, or a bearing coil, coil rotating and supporting structure secured thereto, means for shielding said coil from the influence of a pressure-applying medium comprising two hollow structures secured in base-to-base relation and spaced from said roof, a member between the bases of said structures impeding the formation of induced currents, and supporting stanchions rising from said roof and secured to said bases and member.

5. The combination with the roof of a ships pilot house, of a bearing coil, coil rotating and supporting structure secured thereto, means for shielding said coil from the infiuence of a pressure-applying medium comprising two hollow structures secured in baseto-base relation and spaced from said roof, a discontinuous metallic ring between the bases of said structures, and supporting stanchions rising from said roof and secured to said bases and ring.

6. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two hollow str ctures formed of a fabric impregnated with a phenol condensation product and secured in base-tobase relation to form a closed coil housin '7. The combination with a rectangular bearing coil and means for rotating said coil to position related to the direction of a source of electro-radiant energy, of means for shielding said coil from the influence of a pressureapplying medium comprising two substantially similar conical structures secured in base-to-base relation and within which the coil is rotatable.

8. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electro radiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two hollow structures forming a closed housing, and means for maintaining said structures in predetermined position with respect to each other.

9. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-apply ing medium comprising two hollow structures joined at their bases to form a closed housing and within which the coil is received.

10. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electro radiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising a closed housing formed of two substantially similar hollow structures joined at their bases and within which the coil is received.

11. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two substantially similar conical structures forming a housing for the coil, and means for maintaining said structures in predetermined position with respect to each other.

12. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two substantially similar conical structures joined at their bases and within which the coil is received.

13. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two hollow structures secured in base-to-base relation to form a coilreceiving closed housing, and a metallic member between the bases of said structures at right angles to the plane of said coil.

14. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two hollow structures secured in base-to-baserelation to form a coilreceiving closed housing, and a discontinuous metallic ring between the bases of said structures.

15. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two substantially similar conical structures joined at their bases, and a member between the bases of said structures impeding the formation of induced currents.

16. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electroradiant energy, of means for shielding said coil from the influence of a pressure-applying medium comprising two substantially similar conical structures joined at their bases, and a discontinuous metallic ring between the bases of said structures.

17. The combination with a bearing coil and means for rotating said coil to position related to the direction of a source of electro-- related to the direction of a source of electroradiant energy, of a housing therefor comprising two hollow structures, and a'metallic ring disposedat right-angles to the plane of said coil joining the bases of said structures.

FREDERICK A. KOLSTER. 

